Replies to Gholson's commentary (PS 522 655) on the article by Coldren and Colombo in this monograph. Discusses limitations in the shift procedure methodology traditionally used in research on discrimination learning, and considers the use in future research of methodologies that can precisely decompose children's responses to feedback during…

Three experiments explored the effect of introducing novel information about a central target after a short delay on six-month-old's recognition of the original target, the novel exposure target, and a completely novel one. They found that the infants' memory of a central target is resistant to impairment by conflicting postevent information after…

A series of 4 experiments involving 96 infants aged 6 to 17.5 months examined their capacities to detect repeated target words in fluent speech. Taken together, study results indicate that some ability to detect words in fluent speech contexts is present by 7.5 months of age. (SLD)

One experiment determined that the minimum angle at which infants can discriminate 2 sound presentations decreases substantially toward 48 weeks of age. In 3 succeeding experiments, infants aged 16, 20, and 28 weeks were able to discriminate sounds presented to each ear between 50 and 75 microseconds apart. (BC)

Thirty nonparent adults were classified as high or low on the Child Abuse Potential Inventory. Their heart rate and skin conductance were assessed as they listened to audiotapes of "normal" phonated infant cries and high-pitched, hyperphonated cries, and subjects rated the cries. Marginal differences were found between groups.…

Investigated age differences in perceived frequency of discipline problems among preschoolers. Parent reports indicated peaks in behavior occurrences at 30-36 months for total items and 4 of 5 scales on Toddler Behavior Checklist. By 48 months, found significant decreases from peak in discipline problems only for Physical Aggression and Immaturity…

Qualitative study of 27 couples who experienced pregnancy loss and infant death explored emotional support that spouses give to partners. In most couples, support was described by both couples as mutual. Among all who provided mutual support, most perceived fairly even exchange. Couples who provided little support to each other were helped by peer…

This study compared language abilities in three groups of preschool children (total n=18) who were born prematurely: children with bilateral spastic cerebral palsy associated with perinatal brain injury, with similar brain injury but no motor impairment, and with no brain injuries. No significant differences were observed among the groups on any…

Six lexical principles for object label learning are evaluated. In this framework, lexical acquisition changes as a result of the particular principles a given child has at his or her disposal. These principles were developed for the class of object labels but may also apply across other early-appearing word classes. (Contains 98 references.) (JP)

Two studies demonstrated that infants use referential cues to guide new word-object mapping as early as 19 to 20 months of age and that they understood that actions accompanying such labeling were not necessarily referential. These findings indicate that language learning is grounded in a relatively rich understanding of cues to reference, at…

Examined the instrumental responses and facial expressions during learning and extinction in a group of 36 cocaine-exposed infants ages 4 to 8 months and an equal number of control subjects. Findings indicated that cocaine-exposed infants expressed less interest and joy during learning and less anger and sadness during extinction than infants who…

Case study reports a case of Munchausen Syndrome by Proxy, a form of child abuse in which the mother presents a child for treatment for a condition she herself has invented or created. This case study describes the ways in which a mother obtained a diagnosis of sensorineural hearing loss as well as amplification for her normally hearing infant.…

Studied behavior of infants with insecure-avoidant attachments who were reunited with their mothers after having been placed in a strange situation away from the mothers. Infants with extensive nonparental care experience displayed more stressful behavior in reunion episodes than did infants with less nonparental care experience. (GLR)

A longitudinal study of 31 babies in their twelfth through twenty-third weeks of age tested the Neo-Piagetian theory of a shift or spurt in infants' cognitive development at the age of 4 months. Results were consistent with this neo-Piagetian concept of stage change. (MDM)

Three experiments tested the hypothesis that the differences in infants' time of looking at a stimulus are due to infants' differential sensitivity to global and local visual information. Found that both long- and short-looking four-month-old infants were sensitive to both types of information. These results do not support the hypothesis. (MDM)